WO2008028567A1 - Electrical system of a vehicle, provided for the towing away of the same - Google Patents

Electrical system of a vehicle, provided for the towing away of the same Download PDF

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Publication number
WO2008028567A1
WO2008028567A1 PCT/EP2007/007403 EP2007007403W WO2008028567A1 WO 2008028567 A1 WO2008028567 A1 WO 2008028567A1 EP 2007007403 W EP2007007403 W EP 2007007403W WO 2008028567 A1 WO2008028567 A1 WO 2008028567A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
towing
electrical system
towed
power supply
Prior art date
Application number
PCT/EP2007/007403
Other languages
German (de)
French (fr)
Inventor
Joachim Fröschl
Klaus Wandel
Alexander Mai
Original Assignee
Bayerische Motoren Werke Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke Aktiengesellschaft filed Critical Bayerische Motoren Werke Aktiengesellschaft
Priority to CN200780029694XA priority Critical patent/CN101500859B/en
Publication of WO2008028567A1 publication Critical patent/WO2008028567A1/en
Priority to US12/361,191 priority patent/US8346431B2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/58—Auxiliary devices
    • B60D1/62—Auxiliary devices involving supply lines, electric circuits, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L1/00—Supplying electric power to auxiliary equipment of vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/53—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells in combination with an external power supply, e.g. from overhead contact lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
    • B60P3/12—Vehicles adapted to transport, to carry or to comprise special loads or objects for salvaging damaged vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2250/00—Driver interactions
    • B60L2250/16—Driver interactions by display
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors

Definitions

  • the invention relates to an electrical system of a motor vehicle.
  • a vehicle For towing a vehicle usually requires only a tow bar or a tow rope.
  • An electrical connection between two vehicles in the form of a jumper cable is also known and serves to make a towing unnecessary.
  • an electrical connection is also made to power and control a lighting and turn signal device that is temporarily attached to the rear of the trailer during towing.
  • the object of the invention is to provide a suitable vehicle electrical system for a motor vehicle, which requires a power supply during a possible towing process.
  • An essential aspect of the invention is to supplement the known wiring system by a power supply control device.
  • This serves to provide an external power supply, in particular by a towing vehicle for the towed vehicle.
  • the power supply control device according to the invention in schleppenden
  • Vehicle detects the provision of an external power supply and controls the power supply in the motor vehicle such that only one or more sub-systems of the entire vehicle electrical system of the motor vehicle are supplied with voltage.
  • the components in the vehicle to be towed can be specifically supplied with voltage whose operation is necessary or useful when towing the vehicle.
  • the targeted provision of an external power supply instead of a mere electrical coupling of the electrical system of the towing vehicle with the electrical system of the vehicle to be towed also reduces the risk of feeding electrical power into damaged vehicle components. This reduces the risk of short-circuits and thus of vehicle fires.
  • the power supply of the towing vehicle is claimed only in the extent actually required for towing.
  • the power supply control device has a program-controlled processor and a program control.
  • the program control is preferably designed in such a way that substantially only the sub-systems required for safe towing the vehicle are supplied with voltage.
  • This combination of hardware and software has the advantage that this embodiment can be adapted particularly easily to different vehicle models and also to different equipment variants. Only the existing in the specific model or in the specific equipment variant components that are required for towing and need to be supplied to their operation with electrical voltage can be supplied with targeted voltage.
  • these are, if necessary, the steering and / or the brakes or the brake system, and / or the lighting and / or the clutch and / or the transmission and / or the warning or flashing lights and / or a hands-free device of the motor vehicle which are supplied with voltage.
  • a hands-free device of the towing vehicle with a hands-free device of the towed vehicle is wirelessly or wired coupled and thus the driver of the towing vehicle and the driver of the towed vehicle communication between both drivers during the towing process is enabled. This allows tuning processes between the two drivers, especially when braking and turning during the towing process, which makes road traffic significantly safer.
  • an electrical connection to the power supply of the towed vehicle is made by the towing vehicle.
  • This is preferably done in the form of a flexible electrical cable having at its two ends in each case a plug which is inserted into a corresponding socket of the towing vehicle and the towed vehicle.
  • the electrical connection between the socket in the towing vehicle and the electrical system of the towing vehicle is preferably electrically disconnected.
  • the electrical connection between the socket of the towed vehicle and the electrical system of the towed vehicle can be electrically disconnected.
  • a shutdown or disconnection may be provided if a short-circuit current or too high a current occurs in the connection cable.
  • the driving light and / or the hazard warning lights of the vehicle is switched on automatically.
  • road safety is automatically increased.
  • the towed vehicle is provided with a voltage converter, which converts a higher or lower electrical voltage provided by the towing vehicle into the electrical voltage which must be provided in the partial on-board networks to be supplied with voltage during the towing process.
  • the flexibility or the combination possibilities of dragging and towing vehicles is increased. This is of particular importance when vehicles are provided in the future with multi-voltage on-board networks.
  • the electrical system according to the invention is provided with a battery state detection device.
  • the device determines, based on predetermined criteria, whether the towing vehicle is capable of supplying a towed vehicle with electrical voltage.
  • the battery state detection device in the case of insufficiently powerful battery is an appropriate indication to the driver and the electrical power supply for the vehicle to be towed not even if the towing vehicle for this purpose for a short time in would be able. Otherwise, the towing vehicle could itself remain or not function reliably. These measures also increase road safety.
  • the vehicle electrical system according to the invention is provided in hybrid vehicles, which due to their electrical architecture during the towing process expected to be coupled anyway with an external power supply.

Abstract

The invention relates to an electrical system of a motor vehicle. To provide a suitable electrical system for a motor vehicle, which system requires a voltage supply during a possible towing-away operation, a voltage-supply control device is proposed which recognizes the provision of an external voltage supply, in particular by means of a towing vehicle for the motor vehicle, and controls the voltage supply in the motor vehicle in such a manner that only one or more subsystems of the entire electrical system of the motor vehicle are supplied with voltage.

Description

Bordnetz-System eines Fahrzeugs vorbereitet für dessen Abschleppen Wiring system of a vehicle prepared for its towing
Die Erfindung betrifft ein Bordnetz-System eines Kraftfahrzeugs.The invention relates to an electrical system of a motor vehicle.
Zum Abschleppen eines Fahrzeugs bedarf es üblicherweise lediglich einer Abschleppstange oder eines Abschleppseils. Eine elektrische Verbindung zwischen zwei Fahrzeugen in Form eines Starthilfekabels ist ebenfalls bekannt und dient dazu, ein Abschleppen unnötig zu machen. Bei Ziehen eines Anhängers durch ein Fahrzeug wird neben einer mechanischen Verbindung auch eine elektrische Verbindung zur Spannungsversorgung und Steuerung einer Beleuchtungs- und Blinker-Vorrichtung hergestellt, die temporär während des Ziehens des Anhängers an diesem im Heckbereich angebracht wird.For towing a vehicle usually requires only a tow bar or a tow rope. An electrical connection between two vehicles in the form of a jumper cable is also known and serves to make a towing unnecessary. When a trailer is towed by a vehicle, in addition to a mechanical connection, an electrical connection is also made to power and control a lighting and turn signal device that is temporarily attached to the rear of the trailer during towing.
Aufgabe der Erfindung ist die Bereitstellung eines geeigneten Bordnetz-Systems für ein Kraftfahrzeug, das während eines möglichen Abschleppvorgangs eine Spannungsversorgung benötigt.The object of the invention is to provide a suitable vehicle electrical system for a motor vehicle, which requires a power supply during a possible towing process.
Diese Aufgabe wird durch ein Bordnetz-System mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Patentansprüche.This object is achieved by an electrical system with the features of claim 1. Advantageous embodiments of the invention are the subject of the dependent claims.
Ein wesentlicher Aspekt der Erfindung besteht darin, das bekannte Bordnetz- System durch eine Spannungsversorgungs-Steuereinrichtung zu ergänzen. Diese dient der Bereitstellung einer externen Spannungsversorgung, insbesondere durch ein Schleppfahrzeug für das abzuschleppende Kraftfahrzeug. Die erfindungsgemäße Spannungsversorgungs-Steuereinrichtung im zu schleppendenAn essential aspect of the invention is to supplement the known wiring system by a power supply control device. This serves to provide an external power supply, in particular by a towing vehicle for the towed vehicle. The power supply control device according to the invention in schleppenden
Fahrzeug erkennt die Bereitstellung einer externen Spannungsversorgung und steuert die Spannungsversorgung in dem Kraftfahrzeug derart, dass lediglich ein oder mehrere Teilbordnetze des gesamten Bordnetz-Systems des Kraftfahrzeugs mit Spannung versorgt werden. Hierdurch können die Komponenten im zu schleppenden Fahrzeug gezielt mit Spannung versorgt werden, deren Betrieb beim Abschleppen des Fahrzeugs erforderlich oder sinnvoll sind. Die gezielte Bereitstellung einer externen Spannungsversorgung anstelle einer bloßen elektrischen Kopplung des Bordnetzes des schleppenden Fahrzeuges mit dem Bordnetz des zu schleppenden Fahrzeuges reduziert zudem das Risiko der Einspeisung von elektrischer Leistung in beschädigte Fahrzeugkomponenten. Dies reduziert das Risiko von Kürzschlüssen und damit von Fahrzeugbränden. Zudem wird die Spannungsversorgung des schleppenden Fahrzeugs nur im tatsächlich zum Abschleppen erforderlichen Umfang beansprucht.Vehicle detects the provision of an external power supply and controls the power supply in the motor vehicle such that only one or more sub-systems of the entire vehicle electrical system of the motor vehicle are supplied with voltage. As a result, the components in the vehicle to be towed can be specifically supplied with voltage whose operation is necessary or useful when towing the vehicle. The targeted provision of an external power supply instead of a mere electrical coupling of the electrical system of the towing vehicle with the electrical system of the vehicle to be towed also reduces the risk of feeding electrical power into damaged vehicle components. This reduces the risk of short-circuits and thus of vehicle fires. In addition, the power supply of the towing vehicle is claimed only in the extent actually required for towing.
Bei einer besonders bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass die Spannungsversorgungs-Steuereinrichtung einen programmgesteuerten Prozessor und eine Programmsteuerung aufweist. Die Programmsteuerung wird bevorzugt derart gestaltet, dass im Wesentlichen lediglich die zum sicheren Abschleppen des Fahrzeugs erforderlichen Teilbordnetze mit Spannung versorgt werden. Diese Kombination aus Hardware und Software hat den Vorteil, dass diese Ausführungsform besonders einfach an verschiedene Fahrzeugmodelle und auch an verschiedene Ausstattungsvarianten angepasst werden kann. Lediglich die bei dem konkreten Modell bzw. bei der konkreten Ausstattungsvariante vorhandenen Komponenten, die beim Abschleppvorgang benötigt werden und zu ihrem Betrieb mit elektrischer Spannung versorgt werden müssen, können gezielt mit Spannung versorgt werden.In a particularly preferred embodiment of the invention it is provided that the power supply control device has a program-controlled processor and a program control. The program control is preferably designed in such a way that substantially only the sub-systems required for safe towing the vehicle are supplied with voltage. This combination of hardware and software has the advantage that this embodiment can be adapted particularly easily to different vehicle models and also to different equipment variants. Only the existing in the specific model or in the specific equipment variant components that are required for towing and need to be supplied to their operation with electrical voltage can be supplied with targeted voltage.
Bei einer Ausführungsform der Erfindung sind dies erforderlichenfalls die Lenkung und/oder die Bremsen bzw. die Bremsanlage, und/oder die Beleuchtung und/oder die Kupplung und/oder das Getriebe und/oder die Warn- oder Blinkleuchten und/oder eine Freisprech-Einrichtung des Kraftfahrzeugs, die mit Spannung versorgt werden. Dies gilt insbesondere für ein Fahrzeug, dass mit einem Drive-by- wire- oder mit einem Steer-by-wire-System ausgestattet ist.In one embodiment of the invention, these are, if necessary, the steering and / or the brakes or the brake system, and / or the lighting and / or the clutch and / or the transmission and / or the warning or flashing lights and / or a hands-free device of the motor vehicle which are supplied with voltage. This applies in particular to a vehicle that is equipped with a drive-by-wire system or with a steer-by-wire system.
Bei einer Ausgestaltung der Erfindung ist vorgesehen, dass eine Freisprech- Einrichtung des Schleppfahrzeugs mit einer Freisprech-Einrichtung des abgeschleppten Fahrzeugs drahtlos oder drahtgebunden gekoppelt wird und damit dem Fahrer des Schleppfahrzeugs und dem Fahrer des abgeschleppten Fahrzeugs eine Kommunikation zwischen beiden Fahrern während des Abschleppvorgangs ermöglicht wird. Dadurch sind Abstimmprozesse zwischen beiden- Fahrern, insbesondere bei Bremsen und Abbiegen während des Abschleppvorgangs ermöglicht, was den Straßenverkehr deutlich sicherer macht.In one embodiment of the invention, it is provided that a hands-free device of the towing vehicle with a hands-free device of the towed vehicle is wirelessly or wired coupled and thus the driver of the towing vehicle and the driver of the towed vehicle communication between both drivers during the towing process is enabled. This allows tuning processes between the two drivers, especially when braking and turning during the towing process, which makes road traffic significantly safer.
Bei einer weiteren Ausführungsform der Erfindung ist vorgesehen, dass zwischen dem Schleppfahrzeug und dem abgeschleppten Fahrzeug eine elektrische Verbindung zur Spannungsversorgung des geschleppten Fahrzeugs durch das schleppende Fahrzeug hergestellt wird. Dies geschieht bevorzugt in Form eines flexiblen elektrischen Kabels, das an seinen beiden Enden jeweils einen Stecker aufweist, der in eine entsprechende Steckdose des schleppenden Fahrzeugs und des geschleppten Fahrzeugs eingesteckt wird.In a further embodiment of the invention it is provided that between the towing vehicle and the towed vehicle, an electrical connection to the power supply of the towed vehicle is made by the towing vehicle. This is preferably done in the form of a flexible electrical cable having at its two ends in each case a plug which is inserted into a corresponding socket of the towing vehicle and the towed vehicle.
Wird die elektrische Verbindung während des Abschleppvorgangs der beiden Fahrzeuge getrennt, indem beispielsweise das Abschleppseil und nachfolgend die elektrische Verbindung unterbrochen wird, wird bevorzugt die elektrische Verbindung zwischen der Steckdose im schleppenden Fahrzeug und dem Bordnetz des schleppenden Fahrzeugs elektrisch getrennt. Ebenso kann ggf. die elektrische Verbindung zwischen der Steckdose des geschleppten Fahrzeugs und dem Bordnetz des geschleppten Fahrzeugs elektrisch getrennt werden. Zudem kann eine Abschaltung bzw. Trennung vorgesehen sein, wenn ein Kurzschlussstrom oder ein zu hoher Strom im Verbindungskabel auftritt. Durch diese Maßnahmen lässt sich das Risiko von Kurzschlüssen und damit von Fahrzeugbränden deutlich weiter reduzieren. Zudem kann vorgesehen sein, dass beide Fahrer im Falle einer Trennung der elektrischen Verbindung beim Abschleppvorgang von dem erfindungsgemäßen Bordnetz-System unterrichtet werden, z.B. durch einen entsprechenden Warnhinweis auf einem Display im Fahrzeug.If the electrical connection is disconnected during towing of the two vehicles, for example, by the tow rope and subsequently the electrical connection is interrupted, the electrical connection between the socket in the towing vehicle and the electrical system of the towing vehicle is preferably electrically disconnected. Likewise, if necessary, the electrical connection between the socket of the towed vehicle and the electrical system of the towed vehicle can be electrically disconnected. In addition, a shutdown or disconnection may be provided if a short-circuit current or too high a current occurs in the connection cable. These measures can significantly reduce the risk of short-circuits and vehicle fires. In addition, it can be provided that both drivers are informed in the event of a separation of the electrical connection during towing by the electrical system according to the invention, e.g. by a corresponding warning on a display in the vehicle.
Bei einer weiteren bevorzugten Ausführungsform der Erfindung ist vorgesehen, dass mit der Herstellung der externen Spannungsversorgung des geschleppten Fahrzeugs das Fahrlicht und/oder die Warnblinkanlage des Fahrzeugs selbsttätig eingeschaltet wird. Hierdurch wird die Sicherheit im Straßenverkehr zusätzlich automatisch erhöht. Bei einer Weiterbildung der Erfindung ist vorgesehen, dass das abgeschleppte Fahrzeug mit einem Spannungswandler versehen ist, der eine vom Schleppfahrzeug bereitgestellte höhere oder niedrigere elektrische Spannung in diejenige elektrische Spannung umwandelt, die in den beim Abschleppvorgang mit Spannung zu versorgenden Teilbordnetzen bereitgestellt werden muss. Hierdurch wird die Flexibilität bzw. die Kombinationsmöglichkeiten von schleppenden und zu schleppenden Fahrzeugen erhöht. Dies ist insbesondere von Bedeutung, wenn Fahrzeuge in Zukunft mit Mehrspannungs-Bordnetzen versehen sind.In a further preferred embodiment of the invention, it is provided that with the production of the external power supply of the towed vehicle, the driving light and / or the hazard warning lights of the vehicle is switched on automatically. As a result, road safety is automatically increased. In a further development of the invention, it is provided that the towed vehicle is provided with a voltage converter, which converts a higher or lower electrical voltage provided by the towing vehicle into the electrical voltage which must be provided in the partial on-board networks to be supplied with voltage during the towing process. As a result, the flexibility or the combination possibilities of dragging and towing vehicles is increased. This is of particular importance when vehicles are provided in the future with multi-voltage on-board networks.
Bei einer weiteren Ausführungsform der Erfindung ist vorgesehen, dass ab einer vorbestimmten Innentemperatur im abgeschleppten Fahrzeug dessen Klimaanlage das Fahrzeug kühlt. Indem die externe Spannungsversorgung des schleppenden Fahrzeugs den Betrieb der Klimaanlage im geschleppten Fahrzeug ermöglicht, wird der Fahrer im abgeschleppten Fahrzeug bei entsprechenden Temperaturen im Innenraum des abgeschleppten Fahrzeugs entlastet und damit die Sicherheit beim Abschleppvorgang erhöht. Wird die Klimaanlage im geschleppten Fahrzeug durch eine Brennstoff-Zelle mit Spannung versorgt, kann diese beim Abschleppvorgang erforderlichenfalls automatisch in Betrieb gesetzt werden, ohne dass es hierzu einer externen Spannungsversorgung bedarf.In a further embodiment of the invention it is provided that from a predetermined internal temperature in the towed vehicle whose air conditioning vehicle cools. By the external power supply of the towing vehicle allows the operation of the air conditioning in the towed vehicle, the driver is relieved in the towed vehicle at appropriate temperatures in the interior of the towed vehicle, thus increasing the safety during towing. If the air conditioning system in the towed vehicle is supplied with power by a fuel cell, it can be automatically put into operation during the towing process, if necessary, without requiring an external power supply for this purpose.
Bei einer bevorzugten Ausführungsform ist das erfindungsgemäße Bordnetz-System mit einer Batterie-Zustandserkennungs-Vorrichtung versehen. Die Vorrichtung ermittelt anhand vorbestimmter Kriterien, ob das zum Schleppen vorgesehene Fahrzeug in der Lage ist, ein geschlepptes Fahrzeug mit elektrischer Spannung zu versorgen. Bei einer Weiterbildung ist vorgesehen, dass die Batterie- Zustandserkennungs-Vorrichtung im Falle einer nicht ausreichend leistungsfähigen Batterie einen entsprechenden Hinweis an den Fahrer gibt und die elektrische Spannungsversorgung für das zu schleppende Fahrzeug auch dann nicht bereitstellt, wenn das Schleppfahrzeug hierzu für eine kurze Zeit in der Lage wäre. Anderenfalls könnte das Schleppfahrzeug selbst liegen bleiben oder nicht zuverlässig funktionieren. Durch diese Maßnahmen wird also die Sicherheit im Straßenverkehr ebenfalls erhöht. Bei einer Ausführungsform der Erfindung ist das erfindungsgemäße Bordnetz- System in Hybrid-Fahrzeugen vorgesehen, die aufgrund ihrer elektrischen Architektur während des Abschleppvorgangs voraussichtlich ohnehin mit einer externen Spannungsversorgung gekoppelt werden müssen. In a preferred embodiment, the electrical system according to the invention is provided with a battery state detection device. The device determines, based on predetermined criteria, whether the towing vehicle is capable of supplying a towed vehicle with electrical voltage. In a further development, it is provided that the battery state detection device in the case of insufficiently powerful battery is an appropriate indication to the driver and the electrical power supply for the vehicle to be towed not even if the towing vehicle for this purpose for a short time in would be able. Otherwise, the towing vehicle could itself remain or not function reliably. These measures also increase road safety. In one embodiment of the invention, the vehicle electrical system according to the invention is provided in hybrid vehicles, which due to their electrical architecture during the towing process expected to be coupled anyway with an external power supply.

Claims

Patentansprüche claims
1. Bordnetz-System eines Kraftfahrzeugs, gekennzeichnet durch eine Spannungsversorgungs-Steuereinrichtung, die die Bereitstellung einer externen Spannungsversorgung, insbesondere durch ein Schleppfahrzeug für das Kraftfahrzeug, erkennt und die Spannungsversorgung in dem Kraftfahrzeug derart steuert, dass lediglich ein oder mehrere Teilbordnetze des gesamten Bordnetz-Systems des Kraftfahrzeugs mit Spannung versorgt werden.1. electrical system of a motor vehicle, characterized by a power supply control device which detects the provision of an external power supply, in particular by a towing vehicle for the motor vehicle, and controls the power supply in the motor vehicle such that only one or more sub-systems of the entire wiring system Systems of the motor vehicle to be powered.
2. Bordnetz-System nach Anspruch 1 , dadurch gekennzeichnet, dass die Spannungsversorgungs-Steuereinrichtung einen programmgesteuerten Prozessor und eine Programmsteuerung aufweisen und die Programmsteuerung derart gestaltet ist, dass im Wesentlichen lediglich die zum sicheren Abschleppen des Fahrzeugs erforderlichen Teilbordnetze mit Spannung versorgt werden.2. On-board electrical system according to claim 1, characterized in that the power supply control device comprises a program-controlled processor and a program control and the program control is designed such that substantially only required for safe towing the vehicle sub-electrical systems are supplied with voltage.
3. Bordnetz-System nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass, insbesondere bei einem Drive-By-Wire-System im3. electrical system according to one of the preceding claims, characterized in that, in particular in a drive-by-wire system in
Kraftfahrzeug, erforderlichenfalls die Lenkung und/oder die Bremsen bzw. die Bremsanlage, und/oder die Beleuchtung und/oder die Kupplung und/oder das Getriebe und/oder die Warn- oder Blinkleuchten und/oder eine Freisprech- Einrichtung des Kraftfahrzeugs mit Spannung versorgt werden.Motor vehicle, if necessary, the steering and / or the brakes or the brake system, and / or the lighting and / or the clutch and / or the transmission and / or the warning or flashing lights and / or a hands-free device of the motor vehicle supplied with voltage become.
4. Bordnetz-System nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass eine Freisprech-Einrichtung des Schleppfahrzeugs mit einer Freisprech-Einrichtung des abgeschleppten Fahrzeugs drahtlos oder drahtgebunden gekoppelt wird und damit dem Fahrer des Schleppfahrzeugs und dem Fahrer des abgeschleppten Fahrzeugs eine Kommunikation zwischen beiden Fahrern während des Abschleppvorgangs ermöglicht wird.4. On-board electrical system according to one of the preceding claims, characterized in that a hands-free device of the towing vehicle with a hands-free device of the towed vehicle is wirelessly or wired coupled and thus the driver of the towing vehicle and the driver of the towed vehicle communication between the two Drivers during the towing process is enabled.
5. Bordnetz-System nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass zwischen dem Schleppfahrzeug und dem abgeschleppten Fahrzeug eine elektrische Verbindung zur Spannungsversorgung des geschleppten Fahrzeugs durch das schleppende Fahrzeug hergestellt wird, insbesondere in Form eines flexiblen elektrischen Kabels, das an seinen beiden Enden jeweils einen Stecker aufweist, der in eine entsprechende Steckdose des schleppenden Fahrzeugs und des geschleppten Fahrzeugs eingesteckt wird.5. electrical system according to one of the preceding claims, characterized in that between the towing vehicle and the towed vehicle is an electrical connection to the power supply of the towed vehicle produced by the towing vehicle, in particular in the form of a flexible electrical cable having at its two ends in each case a plug which is inserted into a corresponding socket of the towing vehicle and the towed vehicle.
6. Bordnetz-System nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass mit der Herstellung der externen Spannungsversorgung des geschleppten Fahrzeugs das Fahrlicht und/oder die Warnblinkanlage des6. electrical system according to one of the preceding claims, characterized in that with the production of the external power supply of the towed vehicle, the driving light and / or the hazard warning lights of
Fahrzeugs selbsttätig eingeschaltet wird.Vehicle is turned on automatically.
7. Bordnetz-System nach Anspruch 2, dadurch gekennzeichnet, dass die Programmsteuerung an die im konkreten zu schleppenden Fahrzeug verbaute Sonderausstattung derart angepasst ist, dass deren Spannungsversorgung erforderlichenfalls beim Abschleppvorgang sichergestellt ist, wie bei einer elektrischen Lenkung, einer elektrischen Bremse, einer elektronischen Notruf- und/oder Pannenruf-Vorrichtung oder dgl.7. On-board electrical system according to claim 2, characterized in that the program control is adapted to the built-in concrete vehicle to be towed special equipment such that their power is ensured if necessary during towing, as in an electric steering, an electric brake, an electronic emergency call - and / or breakdown call device or the like.
8. Bordnetz-System nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das Fahrzeug mit einem Spannungswandler versehen ist, der eine vom Schleppfahrzeug bereitgestellte höhere oder niedrigere elektrische Spannung in diejenige elektrische Spannung umwandelt, die in den beim Abschleppvorgang mit Spannung zu versorgenden Teilbordnetzen bereitgestellt werden muss.8. On-board electrical system according to one of the preceding claims, characterized in that the vehicle is provided with a voltage converter which converts a provided by the towing vehicle higher or lower electrical voltage into that electrical voltage provided in the towing to be supplied during towing Teilbordnetzen must become.
9. Bordnetz-System nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass ab einer vorbestimmten Innentemperatur im abgeschleppten Fahrzeug dessen Klimaanlage das Fahrzeug kühlt.9. electrical system according to one of the preceding claims, characterized in that from a predetermined internal temperature in the towed vehicle whose air conditioning cools the vehicle.
10. Bordnetz-System nach einem der vorstehenden Ansprüche, gekennzeichnet durch eine Batterie-Zustandserkennungs-Vorrichtung, die anhand vorbestimmter Kriterien ermittelt, ob das Fahrzeug, wenn es selbst als Schleppfahrzeug dienen soll, in der Lage ist, ein geschlepptes Fahrzeug mit elektrischer Spannung zu versorgen.10. On-board electrical system according to one of the preceding claims, characterized by a battery state detection device which determines based on predetermined criteria, if the vehicle, if it itself as Towing vehicle is able to provide a towed vehicle with electrical voltage.
11. Bordnetz-System nach Anspruch 10, dadurch gekennzeichnet, dass die Batterie-Zustandserkennungs-Vorrichtung im Falle einer nicht ausreichend leistungsfähigen Batterie einen entsprechenden Hinweis an den Fahrer gibt und die elektrische Spannungsversorgung für das zu schleppende Fahrzeug auch dann nicht bereitstellt, wenn das Schleppfahrzeug hierzu für eine kurze Zeit in der Lage wäre.11. On-board electrical system according to claim 10, characterized in that the battery state detection device in the case of insufficiently powerful battery is a corresponding indication to the driver and the electric power supply for the vehicle to be towed not even provides when the towing vehicle would be able to do this for a short time.
12. Bordnetz-System nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass das schleppende und/oder geschleppte Fahrzeug ein Hybrid-Fahrzeug ist, das einen Verbrennungsmotor, einen Elektromotor, eine Batterie und einen weiteren Energiespeicher, wie ein Doppelschichtkondensator, aufweist. 12 electrical system according to one of the preceding claims, characterized in that the trailing and / or towed vehicle is a hybrid vehicle having an internal combustion engine, an electric motor, a battery and another energy storage device, such as a double-layer capacitor.
PCT/EP2007/007403 2006-09-07 2007-08-23 Electrical system of a vehicle, provided for the towing away of the same WO2008028567A1 (en)

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DE102006041925A DE102006041925A1 (en) 2006-09-07 2006-09-07 Wiring system of a vehicle prepared for its towing

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